Electroheater.



PATENTED MAY 3, 1904.

E. R. WATERMAN. BLEGTROHEATEB..

ABPLIOATION FILED JULY 1s, 1903.

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faz-neu' WLF: ssslss No. 758,946. PATENTBD MAY s, 1904. E. R. WATERMAN.

BLECTROHBATER.

APPLICATION FILED JULY 13, 1903. v N0 KODEL. 2 SHIII'ITS-SHIIE'I` 2.

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UNITED STATES Patented May 3, 1904.

PATENT CEEICE.

ELECTROHEATER.

I SPECIFICATION forming` part of Letters Patent No. 758,946, dated May 3, 1904.

Application filed .Tilly 13, 1903. Serial No. 165,401. (No model.)

To all whom it may concern.-

Be it known that I, EDWIN R. WATERMAN, a citizen of the United States, residing at San i Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Electroheaters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of apparatus which are especially designed for heating liquids by means of electrical current; and it consists in the construction and arrangement of its various parts, as will be more fully described in the following specication and particularly pointed out in the claims.

The object of my invention is to simplify the construction and operation of such apparatus and obtain therewith a continuous-running stream of liquids heated to a desired degree of temperature and to provide means to keep it at a comparative degree of heat.

Referring to the herewith annexed drawings, consisting of two sheets, which form a part of this application, Figure 1 represents a vertical sectional view of my invention, showing the entire construction and arrangement thereof; and Fig. 2 is a cross-section taken from dotted line l to 1 of Fig. l.

Like letters of reference made use of in both figures indicate like parts wherever employed.

A represents the main body of my invention, which is formed into a plurality of inner cylinders interspaced, as shown at and arranged in such manner to provide therein a narrow continuous liquid-passage 0, having an up-and-down course, as shown by the arrows in Fig. l, and intercepted by a circular chamber D, formed within the upper portion of the central cylinder. The inner end of the passage is provided with inlet-pipe E, which in practice is connected to the source of liquid-supply, while the outer end of the passage has the outlet-faucet F, both the faucet and pipe being preferably secured at the eX- treme bottom end of the passage, as shown eX- clusively in Fig. 1.

Below the inter-medial chamber D, previously mentioned, is a central circular hot-air chamber Cr, which is closed at its top by the bottom wall of the intermedial chamber D and at its bottom by packing, as shown in dotted lines, Fig. 1, the object of which is to store the heat while in operation and retain for some time a comparative even degree of temperature within the surrounding portion of passage c and its intermedial chamber D-as soon as the operation ceases. The interspaces formed between each cylinder constitute suitable receptacles vvithiny which the electroheating device is placed. These receptacles are closed at one end by the wall of passage c and open at the other for the purpose of removing the heating device placed therein.

The electroheating device consists of bottomless cylindrical shells or cores H, made of layers of asbestos or other materials having a non-conductive natureand around which resistance-wires c' are wound in coils or spiralerating. The wires z' of the various cores are connected to the main current J by means of the connecting ends lc, thus transmitting the heating-power throughout the interspaces and the passage c and in due course heating the liquids circulating therein.

The object of the intermedial chamber D, previously mentioned, is to obtain a large body of hot liquids, which by means of its warm surrounding retains a long time a considerable degree of its temperature after the electric circuit is cut off.

The dotted lines L represent the outer casing and packing adjusted around the main body to keep same free from the contact of cold atmosphere.

If more convenient, my apparatus may be mounted upon bracket M (shown in dotted lines) and secured to the wall N, as particularly shown in Fig. l.

Believing I have produced novel and useful improvements in that class of eleetroapparatus and having fully described the same, what I claim, and desire to secure by Letters Patent of the United States, is-

l. An eleetroheating apparatus provided with a continuous liquid-passage consistingl of a plurality of interspaced cylinders alternately communicating together in combination with electroheating device interposed between the cylinders substantially as set forth and for the purpose specified.

2. An eleetroheating apparatus provided with a body formed into a plurality of interspaced inner cylinders, in combination with a continuous liquid-passage formed within said cylinders, and having' an up-and-down course, substantially as set forth and for the purpose specified.

3. An eleetroheating apparatus consisting of a body having a plurality of interspaeed cyl inders formed integrally therein and alternately communicating' together in opposite directions to form an up-and-down continuous liquid-passage and electroheating devices interposed between the cylinders substantially as set forth and for the purpose specified.

4. An electr-cheating apparatus provided with a plurality of cylinders having a liquidpassage formed therein, in combination with an intermedia] chamber connected to said passag'e, substantially as set forth and for the purpose specified.

5. An electroheating apparatus consisting' of a plurality of cylinders provided with circular liquid-passage having an up-and-down course, in combination with a heat-generating device interposed between the cylinders, sub stantially as set forth and for the purpose specified.

6. An eleetroheating apparatus consisting' of a plurality of cylinders, having' a liquidpassage formed therein, in combination with a hot-air chamber formed centrally within the cylinders, and means to generate the heat interposed between each cylinder, substantially as set forth and for the purpose specified.

7. An electroheating' apparatus provided with a body consisting' of a plurality of inner interspaced cylinders formed integrally and alternately communicating' together, in cornbination with a casing surrounding said body and provided with packing' interposed between the casing and the body substantially as set forth and for the purpose specilied.

In testimony whereof I have affixed my sig'- nature, in presence of two witnesses, this 6th day of July, A. D. 1903.

EDVIN R. lVATERh/[AN In presence of- J. ComNsoN, C. S. TiL'roN. 

